diff --git a/share/man/man4/carp.4 b/share/man/man4/carp.4
index d051377cb3d1..84e87d6edee8 100644
--- a/share/man/man4/carp.4
+++ b/share/man/man4/carp.4
@@ -26,7 +26,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 25, 2012
+.Dd February 21, 2013
 .Dt CARP 4
 .Os
 .Sh NAME
@@ -281,7 +281,7 @@ status change events can be set up by using the following devd.conf rule:
 .Bd -literal -offset indent
 notify 0 {
 	match "system"          "CARP";
-	match "subsystem"       "[0-9]+@";
+	match "subsystem"       "[0-9]+@[0-9a-z]+";
 	match "type"            "(MASTER|BACKUP)";
 	action "/root/carpcontrol.sh $subsystem $type";
 };